/*!
 * vue-resource v1.3.4
 * https://github.com/pagekit/vue-resource
 * Released under the MIT License.
 */

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
      typeof define === 'function' && define.amd ? define(factory) :
          (global.VueResource = factory());
}(this, (function () { 'use strict';

  /**
   * Promises/A+ polyfill v1.1.4 (https://github.com/bramstein/promis)
   */

  var RESOLVED = 0;
  var REJECTED = 1;
  var PENDING  = 2;

  function Promise$1(executor) {

    this.state = PENDING;
    this.value = undefined;
    this.deferred = [];

    var promise = this;

    try {
      executor(function (x) {
        promise.resolve(x);
      }, function (r) {
        promise.reject(r);
      });
    } catch (e) {
      promise.reject(e);
    }
  }

  Promise$1.reject = function (r) {
    return new Promise$1(function (resolve, reject) {
      reject(r);
    });
  };

  Promise$1.resolve = function (x) {
    return new Promise$1(function (resolve, reject) {
      resolve(x);
    });
  };

  Promise$1.all = function all(iterable) {
    return new Promise$1(function (resolve, reject) {
      var count = 0, result = [];

      if (iterable.length === 0) {
        resolve(result);
      }

      function resolver(i) {
        return function (x) {
          result[i] = x;
          count += 1;

          if (count === iterable.length) {
            resolve(result);
          }
        };
      }

      for (var i = 0; i < iterable.length; i += 1) {
        Promise$1.resolve(iterable[i]).then(resolver(i), reject);
      }
    });
  };

  Promise$1.race = function race(iterable) {
    return new Promise$1(function (resolve, reject) {
      for (var i = 0; i < iterable.length; i += 1) {
        Promise$1.resolve(iterable[i]).then(resolve, reject);
      }
    });
  };

  var p$1 = Promise$1.prototype;

  p$1.resolve = function resolve(x) {
    var promise = this;

    if (promise.state === PENDING) {
      if (x === promise) {
        throw new TypeError('Promise settled with itself.');
      }

      var called = false;

      try {
        var then = x && x['then'];

        if (x !== null && typeof x === 'object' && typeof then === 'function') {
          then.call(x, function (x) {
            if (!called) {
              promise.resolve(x);
            }
            called = true;

          }, function (r) {
            if (!called) {
              promise.reject(r);
            }
            called = true;
          });
          return;
        }
      } catch (e) {
        if (!called) {
          promise.reject(e);
        }
        return;
      }

      promise.state = RESOLVED;
      promise.value = x;
      promise.notify();
    }
  };

  p$1.reject = function reject(reason) {
    var promise = this;

    if (promise.state === PENDING) {
      if (reason === promise) {
        throw new TypeError('Promise settled with itself.');
      }

      promise.state = REJECTED;
      promise.value = reason;
      promise.notify();
    }
  };

  p$1.notify = function notify() {
    var promise = this;

    nextTick(function () {
      if (promise.state !== PENDING) {
        while (promise.deferred.length) {
          var deferred = promise.deferred.shift(),
              onResolved = deferred[0],
              onRejected = deferred[1],
              resolve = deferred[2],
              reject = deferred[3];

          try {
            if (promise.state === RESOLVED) {
              if (typeof onResolved === 'function') {
                resolve(onResolved.call(undefined, promise.value));
              } else {
                resolve(promise.value);
              }
            } else if (promise.state === REJECTED) {
              if (typeof onRejected === 'function') {
                resolve(onRejected.call(undefined, promise.value));
              } else {
                reject(promise.value);
              }
            }
          } catch (e) {
            reject(e);
          }
        }
      }
    });
  };

  p$1.then = function then(onResolved, onRejected) {
    var promise = this;

    return new Promise$1(function (resolve, reject) {
      promise.deferred.push([onResolved, onRejected, resolve, reject]);
      promise.notify();
    });
  };

  p$1.catch = function (onRejected) {
    return this.then(undefined, onRejected);
  };

  /**
   * Promise adapter.
   */

  if (typeof Promise === 'undefined') {
    window.Promise = Promise$1;
  }

  function PromiseObj(executor, context) {

    if (executor instanceof Promise) {
      this.promise = executor;
    } else {
      this.promise = new Promise(executor.bind(context));
    }

    this.context = context;
  }

  PromiseObj.all = function (iterable, context) {
    return new PromiseObj(Promise.all(iterable), context);
  };

  PromiseObj.resolve = function (value, context) {
    return new PromiseObj(Promise.resolve(value), context);
  };

  PromiseObj.reject = function (reason, context) {
    return new PromiseObj(Promise.reject(reason), context);
  };

  PromiseObj.race = function (iterable, context) {
    return new PromiseObj(Promise.race(iterable), context);
  };

  var p = PromiseObj.prototype;

  p.bind = function (context) {
    this.context = context;
    return this;
  };

  p.then = function (fulfilled, rejected) {

    if (fulfilled && fulfilled.bind && this.context) {
      fulfilled = fulfilled.bind(this.context);
    }

    if (rejected && rejected.bind && this.context) {
      rejected = rejected.bind(this.context);
    }

    return new PromiseObj(this.promise.then(fulfilled, rejected), this.context);
  };

  p.catch = function (rejected) {

    if (rejected && rejected.bind && this.context) {
      rejected = rejected.bind(this.context);
    }

    return new PromiseObj(this.promise.catch(rejected), this.context);
  };

  p.finally = function (callback) {

    return this.then(function (value) {
          callback.call(this);
          return value;
        }, function (reason) {
          callback.call(this);
          return Promise.reject(reason);
        }
    );
  };

  /**
   * Utility functions.
   */

  var ref = {};
  var hasOwnProperty = ref.hasOwnProperty;

  var ref$1 = [];
  var slice = ref$1.slice;
  var debug = false;
  var ntick;

  var inBrowser = typeof window !== 'undefined';

  var Util = function (ref) {
    var config = ref.config;
    var nextTick = ref.nextTick;

    ntick = nextTick;
    debug = config.debug || !config.silent;
  };

  function warn(msg) {
    if (typeof console !== 'undefined' && debug) {
      console.warn('[VueResource warn]: ' + msg);
    }
  }

  function error(msg) {
    if (typeof console !== 'undefined') {
      console.error(msg);
    }
  }

  function nextTick(cb, ctx) {
    return ntick(cb, ctx);
  }

  function trim(str) {
    return str ? str.replace(/^\s*|\s*$/g, '') : '';
  }

  function trimEnd(str, chars) {

    if (str && chars === undefined) {
      return str.replace(/\s+$/, '');
    }

    if (!str || !chars) {
      return str;
    }

    return str.replace(new RegExp(("[" + chars + "]+$")), '');
  }

  function toLower(str) {
    return str ? str.toLowerCase() : '';
  }

  function toUpper(str) {
    return str ? str.toUpperCase() : '';
  }

  var isArray = Array.isArray;

  function isString(val) {
    return typeof val === 'string';
  }



  function isFunction(val) {
    return typeof val === 'function';
  }

  function isObject(obj) {
    return obj !== null && typeof obj === 'object';
  }

  function isPlainObject(obj) {
    return isObject(obj) && Object.getPrototypeOf(obj) == Object.prototype;
  }

  function isBlob(obj) {
    return typeof Blob !== 'undefined' && obj instanceof Blob;
  }

  function isFormData(obj) {
    return typeof FormData !== 'undefined' && obj instanceof FormData;
  }

  function when(value, fulfilled, rejected) {

    var promise = PromiseObj.resolve(value);

    if (arguments.length < 2) {
      return promise;
    }

    return promise.then(fulfilled, rejected);
  }

  function options(fn, obj, opts) {

    opts = opts || {};

    if (isFunction(opts)) {
      opts = opts.call(obj);
    }

    return merge(fn.bind({$vm: obj, $options: opts}), fn, {$options: opts});
  }

  function each(obj, iterator) {

    var i, key;

    if (isArray(obj)) {
      for (i = 0; i < obj.length; i++) {
        iterator.call(obj[i], obj[i], i);
      }
    } else if (isObject(obj)) {
      for (key in obj) {
        if (hasOwnProperty.call(obj, key)) {
          iterator.call(obj[key], obj[key], key);
        }
      }
    }

    return obj;
  }

  var assign = Object.assign || _assign;

  function merge(target) {

    var args = slice.call(arguments, 1);

    args.forEach(function (source) {
      _merge(target, source, true);
    });

    return target;
  }

  function defaults(target) {

    var args = slice.call(arguments, 1);

    args.forEach(function (source) {

      for (var key in source) {
        if (target[key] === undefined) {
          target[key] = source[key];
        }
      }

    });

    return target;
  }

  function _assign(target) {

    var args = slice.call(arguments, 1);

    args.forEach(function (source) {
      _merge(target, source);
    });

    return target;
  }

  function _merge(target, source, deep) {
    for (var key in source) {
      if (deep && (isPlainObject(source[key]) || isArray(source[key]))) {
        if (isPlainObject(source[key]) && !isPlainObject(target[key])) {
          target[key] = {};
        }
        if (isArray(source[key]) && !isArray(target[key])) {
          target[key] = [];
        }
        _merge(target[key], source[key], deep);
      } else if (source[key] !== undefined) {
        target[key] = source[key];
      }
    }
  }

  /**
   * Root Prefix Transform.
   */

  var root = function (options$$1, next) {

    var url = next(options$$1);

    if (isString(options$$1.root) && !/^(https?:)?\//.test(url)) {
      url = trimEnd(options$$1.root, '/') + '/' + url;
    }

    return url;
  };

  /**
   * Query Parameter Transform.
   */

  var query = function (options$$1, next) {

    var urlParams = Object.keys(Url.options.params), query = {}, url = next(options$$1);

    each(options$$1.params, function (value, key) {
      if (urlParams.indexOf(key) === -1) {
        query[key] = value;
      }
    });

    query = Url.params(query);

    if (query) {
      url += (url.indexOf('?') == -1 ? '?' : '&') + query;
    }

    return url;
  };

  /**
   * URL Template v2.0.6 (https://github.com/bramstein/url-template)
   */

  function expand(url, params, variables) {

    var tmpl = parse(url), expanded = tmpl.expand(params);

    if (variables) {
      variables.push.apply(variables, tmpl.vars);
    }

    return expanded;
  }

  function parse(template) {

    var operators = ['+', '#', '.', '/', ';', '?', '&'], variables = [];

    return {
      vars: variables,
      expand: function expand(context) {
        return template.replace(/\{([^\{\}]+)\}|([^\{\}]+)/g, function (_, expression, literal) {
          if (expression) {

            var operator = null, values = [];

            if (operators.indexOf(expression.charAt(0)) !== -1) {
              operator = expression.charAt(0);
              expression = expression.substr(1);
            }

            expression.split(/,/g).forEach(function (variable) {
              var tmp = /([^:\*]*)(?::(\d+)|(\*))?/.exec(variable);
              values.push.apply(values, getValues(context, operator, tmp[1], tmp[2] || tmp[3]));
              variables.push(tmp[1]);
            });

            if (operator && operator !== '+') {

              var separator = ',';

              if (operator === '?') {
                separator = '&';
              } else if (operator !== '#') {
                separator = operator;
              }

              return (values.length !== 0 ? operator : '') + values.join(separator);
            } else {
              return values.join(',');
            }

          } else {
            return encodeReserved(literal);
          }
        });
      }
    };
  }

  function getValues(context, operator, key, modifier) {

    var value = context[key], result = [];

    if (isDefined(value) && value !== '') {
      if (typeof value === 'string' || typeof value === 'number' || typeof value === 'boolean') {
        value = value.toString();

        if (modifier && modifier !== '*') {
          value = value.substring(0, parseInt(modifier, 10));
        }

        result.push(encodeValue(operator, value, isKeyOperator(operator) ? key : null));
      } else {
        if (modifier === '*') {
          if (Array.isArray(value)) {
            value.filter(isDefined).forEach(function (value) {
              result.push(encodeValue(operator, value, isKeyOperator(operator) ? key : null));
            });
          } else {
            Object.keys(value).forEach(function (k) {
              if (isDefined(value[k])) {
                result.push(encodeValue(operator, value[k], k));
              }
            });
          }
        } else {
          var tmp = [];

          if (Array.isArray(value)) {
            value.filter(isDefined).forEach(function (value) {
              tmp.push(encodeValue(operator, value));
            });
          } else {
            Object.keys(value).forEach(function (k) {
              if (isDefined(value[k])) {
                tmp.push(encodeURIComponent(k));
                tmp.push(encodeValue(operator, value[k].toString()));
              }
            });
          }

          if (isKeyOperator(operator)) {
            result.push(encodeURIComponent(key) + '=' + tmp.join(','));
          } else if (tmp.length !== 0) {
            result.push(tmp.join(','));
          }
        }
      }
    } else {
      if (operator === ';') {
        result.push(encodeURIComponent(key));
      } else if (value === '' && (operator === '&' || operator === '?')) {
        result.push(encodeURIComponent(key) + '=');
      } else if (value === '') {
        result.push('');
      }
    }

    return result;
  }

  function isDefined(value) {
    return value !== undefined && value !== null;
  }

  function isKeyOperator(operator) {
    return operator === ';' || operator === '&' || operator === '?';
  }

  function encodeValue(operator, value, key) {

    value = (operator === '+' || operator === '#') ? encodeReserved(value) : encodeURIComponent(value);

    if (key) {
      return encodeURIComponent(key) + '=' + value;
    } else {
      return value;
    }
  }

  function encodeReserved(str) {
    return str.split(/(%[0-9A-Fa-f]{2})/g).map(function (part) {
      if (!/%[0-9A-Fa-f]/.test(part)) {
        part = encodeURI(part);
      }
      return part;
    }).join('');
  }

  /**
   * URL Template (RFC 6570) Transform.
   */

  var template = function (options) {

    var variables = [], url = expand(options.url, options.params, variables);

    variables.forEach(function (key) {
      delete options.params[key];
    });

    return url;
  };

  /**
   * Service for URL templating.
   */

  function Url(url, params) {

    var self = this || {}, options$$1 = url, transform;

    if (isString(url)) {
      options$$1 = {url: url, params: params};
    }

    options$$1 = merge({}, Url.options, self.$options, options$$1);

    Url.transforms.forEach(function (handler) {

      if (isString(handler)) {
        handler = Url.transform[handler];
      }

      if (isFunction(handler)) {
        transform = factory(handler, transform, self.$vm);
      }

    });

    return transform(options$$1);
  }

  /**
   * Url options.
   */

  Url.options = {
    url: '',
    root: null,
    params: {}
  };

  /**
   * Url transforms.
   */

  Url.transform = {template: template, query: query, root: root};
  Url.transforms = ['template', 'query', 'root'];

  /**
   * Encodes a Url parameter string.
   *
   * @param {Object} obj
   */

  Url.params = function (obj) {

    var params = [], escape = encodeURIComponent;

    params.add = function (key, value) {

      if (isFunction(value)) {
        value = value();
      }

      if (value === null) {
        value = '';
      }

      this.push(escape(key) + '=' + escape(value));
    };

    serialize(params, obj);

    return params.join('&').replace(/%20/g, '+');
  };

  /**
   * Parse a URL and return its components.
   *
   * @param {String} url
   */

  Url.parse = function (url) {

    var el = document.createElement('a');

    if (document.documentMode) {
      el.href = url;
      url = el.href;
    }

    el.href = url;

    return {
      href: el.href,
      protocol: el.protocol ? el.protocol.replace(/:$/, '') : '',
      port: el.port,
      host: el.host,
      hostname: el.hostname,
      pathname: el.pathname.charAt(0) === '/' ? el.pathname : '/' + el.pathname,
      search: el.search ? el.search.replace(/^\?/, '') : '',
      hash: el.hash ? el.hash.replace(/^#/, '') : ''
    };
  };

  function factory(handler, next, vm) {
    return function (options$$1) {
      return handler.call(vm, options$$1, next);
    };
  }

  function serialize(params, obj, scope) {

    var array = isArray(obj), plain = isPlainObject(obj), hash;

    each(obj, function (value, key) {

      hash = isObject(value) || isArray(value);

      if (scope) {
        key = scope + '[' + (plain || hash ? key : '') + ']';
      }

      if (!scope && array) {
        params.add(value.name, value.value);
      } else if (hash) {
        serialize(params, value, key);
      } else {
        params.add(key, value);
      }
    });
  }

  /**
   * XDomain client (Internet Explorer).
   */

  var xdrClient = function (request) {
    return new PromiseObj(function (resolve) {

      var xdr = new XDomainRequest(), handler = function (ref) {
        var type = ref.type;


        var status = 0;

        if (type === 'load') {
          status = 200;
        } else if (type === 'error') {
          status = 500;
        }

        resolve(request.respondWith(xdr.responseText, {status: status}));
      };

      request.abort = function () { return xdr.abort(); };

      xdr.open(request.method, request.getUrl());

      if (request.timeout) {
        xdr.timeout = request.timeout;
      }

      xdr.onload = handler;
      xdr.onabort = handler;
      xdr.onerror = handler;
      xdr.ontimeout = handler;
      xdr.onprogress = function () {};
      xdr.send(request.getBody());
    });
  };

  /**
   * CORS Interceptor.
   */

  var SUPPORTS_CORS = inBrowser && 'withCredentials' in new XMLHttpRequest();

  var cors = function (request, next) {

    if (inBrowser) {

      var orgUrl = Url.parse(location.href);
      var reqUrl = Url.parse(request.getUrl());

      if (reqUrl.protocol !== orgUrl.protocol || reqUrl.host !== orgUrl.host) {

        request.crossOrigin = true;
        request.emulateHTTP = false;

        if (!SUPPORTS_CORS) {
          request.client = xdrClient;
        }
      }
    }

    next();
  };

  /**
   * Form data Interceptor.
   */

  var form = function (request, next) {

    if (isFormData(request.body)) {

      request.headers.delete('Content-Type');

    } else if (isObject(request.body) && request.emulateJSON) {

      request.body = Url.params(request.body);
      request.headers.set('Content-Type', 'application/x-www-form-urlencoded');
    }

    next();
  };

  /**
   * JSON Interceptor.
   */

  var json = function (request, next) {

    var type = request.headers.get('Content-Type') || '';

    if (isObject(request.body) && type.indexOf('application/json') === 0) {
      request.body = JSON.stringify(request.body);
    }

    next(function (response) {

      return response.bodyText ? when(response.text(), function (text) {

        type = response.headers.get('Content-Type') || '';

        if (type.indexOf('application/json') === 0 || isJson(text)) {

          try {
            response.body = JSON.parse(text);
          } catch (e) {
            response.body = null;
          }

        } else {
          response.body = text;
        }

        return response;

      }) : response;

    });
  };

  function isJson(str) {

    var start = str.match(/^\[|^\{(?!\{)/), end = {'[': /]$/, '{': /}$/};

    return start && end[start[0]].test(str);
  }

  /**
   * JSONP client (Browser).
   */

  var jsonpClient = function (request) {
    return new PromiseObj(function (resolve) {

      var name = request.jsonp || 'callback', callback = request.jsonpCallback || '_jsonp' + Math.random().toString(36).substr(2), body = null, handler, script;

      handler = function (ref) {
        var type = ref.type;


        var status = 0;

        if (type === 'load' && body !== null) {
          status = 200;
        } else if (type === 'error') {
          status = 500;
        }

        if (status && window[callback]) {
          delete window[callback];
          document.body.removeChild(script);
        }

        resolve(request.respondWith(body, {status: status}));
      };

      window[callback] = function (result) {
        body = JSON.stringify(result);
      };

      request.abort = function () {
        handler({type: 'abort'});
      };

      request.params[name] = callback;

      if (request.timeout) {
        setTimeout(request.abort, request.timeout);
      }

      script = document.createElement('script');
      script.src = request.getUrl();
      script.type = 'text/javascript';
      script.async = true;
      script.onload = handler;
      script.onerror = handler;

      document.body.appendChild(script);
    });
  };

  /**
   * JSONP Interceptor.
   */

  var jsonp = function (request, next) {

    if (request.method == 'JSONP') {
      request.client = jsonpClient;
    }

    next();
  };

  /**
   * Before Interceptor.
   */

  var before = function (request, next) {

    if (isFunction(request.before)) {
      request.before.call(this, request);
    }

    next();
  };

  /**
   * HTTP method override Interceptor.
   */

  var method = function (request, next) {

    if (request.emulateHTTP && /^(PUT|PATCH|DELETE)$/i.test(request.method)) {
      request.headers.set('X-HTTP-Method-Override', request.method);
      request.method = 'POST';
    }

    next();
  };

  /**
   * Header Interceptor.
   */

  var header = function (request, next) {

    var headers = assign({}, Http.headers.common,
        !request.crossOrigin ? Http.headers.custom : {},
        Http.headers[toLower(request.method)]
    );

    each(headers, function (value, name) {
      if (!request.headers.has(name)) {
        request.headers.set(name, value);
      }
    });

    next();
  };

  /**
   * XMLHttp client (Browser).
   */

  var xhrClient = function (request) {
    return new PromiseObj(function (resolve) {

      var xhr = new XMLHttpRequest(), handler = function (event) {

        var response = request.respondWith(
            'response' in xhr ? xhr.response : xhr.responseText, {
              status: xhr.status === 1223 ? 204 : xhr.status, // IE9 status bug
              statusText: xhr.status === 1223 ? 'No Content' : trim(xhr.statusText)
            }
        );

        each(trim(xhr.getAllResponseHeaders()).split('\n'), function (row) {
          response.headers.append(row.slice(0, row.indexOf(':')), row.slice(row.indexOf(':') + 1));
        });

        resolve(response);
      };

      request.abort = function () { return xhr.abort(); };

      if (request.progress) {
        if (request.method === 'GET') {
          xhr.addEventListener('progress', request.progress);
        } else if (/^(POST|PUT)$/i.test(request.method)) {
          xhr.upload.addEventListener('progress', request.progress);
        }
      }

      xhr.open(request.method, request.getUrl(), true);

      if (request.timeout) {
        xhr.timeout = request.timeout;
      }

      if (request.responseType && 'responseType' in xhr) {
        xhr.responseType = request.responseType;
      }

      if (request.withCredentials || request.credentials) {
        xhr.withCredentials = true;
      }

      if (!request.crossOrigin) {
        request.headers.set('X-Requested-With', 'XMLHttpRequest');
      }

      request.headers.forEach(function (value, name) {
        xhr.setRequestHeader(name, value);
      });

      xhr.onload = handler;
      xhr.onabort = handler;
      xhr.onerror = handler;
      xhr.ontimeout = handler;
      xhr.send(request.getBody());
    });
  };

  /**
   * Http client (Node).
   */

  var nodeClient = function (request) {

    var client = require('got');

    return new PromiseObj(function (resolve) {

      var url = request.getUrl();
      var body = request.getBody();
      var method = request.method;
      var headers = {}, handler;

      request.headers.forEach(function (value, name) {
        headers[name] = value;
      });

      client(url, {body: body, method: method, headers: headers}).then(handler = function (resp) {

        var response = request.respondWith(resp.body, {
              status: resp.statusCode,
              statusText: trim(resp.statusMessage)
            }
        );

        each(resp.headers, function (value, name) {
          response.headers.set(name, value);
        });

        resolve(response);

      }, function (error$$1) { return handler(error$$1.response); });
    });
  };

  /**
   * Base client.
   */

  var Client = function (context) {

    var reqHandlers = [sendRequest], resHandlers = [], handler;

    if (!isObject(context)) {
      context = null;
    }

    function Client(request) {
      return new PromiseObj(function (resolve, reject) {

        function exec() {

          handler = reqHandlers.pop();

          if (isFunction(handler)) {
            handler.call(context, request, next);
          } else {
            warn(("Invalid interceptor of type " + (typeof handler) + ", must be a function"));
            next();
          }
        }

        function next(response) {

          if (isFunction(response)) {

            resHandlers.unshift(response);

          } else if (isObject(response)) {

            resHandlers.forEach(function (handler) {
              response = when(response, function (response) {
                return handler.call(context, response) || response;
              }, reject);
            });

            when(response, resolve, reject);

            return;
          }

          exec();
        }

        exec();

      }, context);
    }

    Client.use = function (handler) {
      reqHandlers.push(handler);
    };

    return Client;
  };

  function sendRequest(request, resolve) {

    var client = request.client || (inBrowser ? xhrClient : nodeClient);

    resolve(client(request));
  }

  /**
   * HTTP Headers.
   */

  var Headers = function Headers(headers) {
    var this$1 = this;


    this.map = {};

    each(headers, function (value, name) { return this$1.append(name, value); });
  };

  Headers.prototype.has = function has (name) {
    return getName(this.map, name) !== null;
  };

  Headers.prototype.get = function get (name) {

    var list = this.map[getName(this.map, name)];

    return list ? list.join() : null;
  };

  Headers.prototype.getAll = function getAll (name) {
    return this.map[getName(this.map, name)] || [];
  };

  Headers.prototype.set = function set (name, value) {
    this.map[normalizeName(getName(this.map, name) || name)] = [trim(value)];
  };

  Headers.prototype.append = function append (name, value){

    var list = this.map[getName(this.map, name)];

    if (list) {
      list.push(trim(value));
    } else {
      this.set(name, value);
    }
  };

  Headers.prototype.delete = function delete$1 (name){
    delete this.map[getName(this.map, name)];
  };

  Headers.prototype.deleteAll = function deleteAll (){
    this.map = {};
  };

  Headers.prototype.forEach = function forEach (callback, thisArg) {
    var this$1 = this;

    each(this.map, function (list, name) {
      each(list, function (value) { return callback.call(thisArg, value, name, this$1); });
    });
  };

  function getName(map, name) {
    return Object.keys(map).reduce(function (prev, curr) {
      return toLower(name) === toLower(curr) ? curr : prev;
    }, null);
  }

  function normalizeName(name) {

    if (/[^a-z0-9\-#$%&'*+.\^_`|~]/i.test(name)) {
      throw new TypeError('Invalid character in header field name');
    }

    return trim(name);
  }

  /**
   * HTTP Response.
   */

  var Response = function Response(body, ref) {
    var url = ref.url;
    var headers = ref.headers;
    var status = ref.status;
    var statusText = ref.statusText;


    this.url = url;
    this.ok = status >= 200 && status < 300;
    this.status = status || 0;
    this.statusText = statusText || '';
    this.headers = new Headers(headers);
    this.body = body;

    if (isString(body)) {

      this.bodyText = body;

    } else if (isBlob(body)) {

      this.bodyBlob = body;

      if (isBlobText(body)) {
        this.bodyText = blobText(body);
      }
    }
  };

  Response.prototype.blob = function blob () {
    return when(this.bodyBlob);
  };

  Response.prototype.text = function text () {
    return when(this.bodyText);
  };

  Response.prototype.json = function json () {
    return when(this.text(), function (text) { return JSON.parse(text); });
  };

  Object.defineProperty(Response.prototype, 'data', {

    get: function get() {
      return this.body;
    },

    set: function set(body) {
      this.body = body;
    }

  });

  function blobText(body) {
    return new PromiseObj(function (resolve) {

      var reader = new FileReader();

      reader.readAsText(body);
      reader.onload = function () {
        resolve(reader.result);
      };

    });
  }

  function isBlobText(body) {
    return body.type.indexOf('text') === 0 || body.type.indexOf('json') !== -1;
  }

  /**
   * HTTP Request.
   */

  var Request = function Request(options$$1) {

    this.body = null;
    this.params = {};

    assign(this, options$$1, {
      method: toUpper(options$$1.method || 'GET')
    });

    if (!(this.headers instanceof Headers)) {
      this.headers = new Headers(this.headers);
    }
  };

  Request.prototype.getUrl = function getUrl (){
    return Url(this);
  };

  Request.prototype.getBody = function getBody (){
    return this.body;
  };

  Request.prototype.respondWith = function respondWith (body, options$$1) {
    return new Response(body, assign(options$$1 || {}, {url: this.getUrl()}));
  };

  /**
   * Service for sending network requests.
   */

  var COMMON_HEADERS = {'Accept': 'application/json, text/plain, */*'};
  var JSON_CONTENT_TYPE = {'Content-Type': 'application/json;charset=utf-8'};

  function Http(options$$1) {

    var self = this || {}, client = Client(self.$vm);

    defaults(options$$1 || {}, self.$options, Http.options);

    Http.interceptors.forEach(function (handler) {

      if (isString(handler)) {
        handler = Http.interceptor[handler];
      }

      if (isFunction(handler)) {
        client.use(handler);
      }

    });

    return client(new Request(options$$1)).then(function (response) {

      return response.ok ? response : PromiseObj.reject(response);

    }, function (response) {

      if (response instanceof Error) {
        error(response);
      }

      return PromiseObj.reject(response);
    });
  }

  Http.options = {};

  Http.headers = {
    put: JSON_CONTENT_TYPE,
    post: JSON_CONTENT_TYPE,
    patch: JSON_CONTENT_TYPE,
    delete: JSON_CONTENT_TYPE,
    common: COMMON_HEADERS,
    custom: {}
  };

  Http.interceptor = {before: before, method: method, jsonp: jsonp, json: json, form: form, header: header, cors: cors};
  Http.interceptors = ['before', 'method', 'jsonp', 'json', 'form', 'header', 'cors'];

  ['get', 'delete', 'head', 'jsonp'].forEach(function (method$$1) {

    Http[method$$1] = function (url, options$$1) {
      return this(assign(options$$1 || {}, {url: url, method: method$$1}));
    };

  });

  ['post', 'put', 'patch'].forEach(function (method$$1) {

    Http[method$$1] = function (url, body, options$$1) {
      return this(assign(options$$1 || {}, {url: url, method: method$$1, body: body}));
    };

  });

  /**
   * Service for interacting with RESTful services.
   */

  function Resource(url, params, actions, options$$1) {

    var self = this || {}, resource = {};

    actions = assign({},
        Resource.actions,
        actions
    );

    each(actions, function (action, name) {

      action = merge({url: url, params: assign({}, params)}, options$$1, action);

      resource[name] = function () {
        return (self.$http || Http)(opts(action, arguments));
      };
    });

    return resource;
  }

  function opts(action, args) {

    var options$$1 = assign({}, action), params = {}, body;

    switch (args.length) {

      case 2:

        params = args[0];
        body = args[1];

        break;

      case 1:

        if (/^(POST|PUT|PATCH)$/i.test(options$$1.method)) {
          body = args[0];
        } else {
          params = args[0];
        }

        break;

      case 0:

        break;

      default:

        throw 'Expected up to 2 arguments [params, body], got ' + args.length + ' arguments';
    }

    options$$1.body = body;
    options$$1.params = assign({}, options$$1.params, params);

    return options$$1;
  }

  Resource.actions = {

    get: {method: 'GET'},
    save: {method: 'POST'},
    query: {method: 'GET'},
    update: {method: 'PUT'},
    remove: {method: 'DELETE'},
    delete: {method: 'DELETE'}

  };

  /**
   * Install plugin.
   */

  function plugin(Vue) {

    if (plugin.installed) {
      return;
    }

    Util(Vue);

    Vue.url = Url;
    Vue.http = Http;
    Vue.resource = Resource;
    Vue.Promise = PromiseObj;

    Object.defineProperties(Vue.prototype, {

      $url: {
        get: function get() {
          return options(Vue.url, this, this.$options.url);
        }
      },

      $http: {
        get: function get() {
          return options(Vue.http, this, this.$options.http);
        }
      },

      $resource: {
        get: function get() {
          return Vue.resource.bind(this);
        }
      },

      $promise: {
        get: function get() {
          var this$1 = this;

          return function (executor) { return new Vue.Promise(executor, this$1); };
        }
      }

    });
  }

  if (typeof window !== 'undefined' && window.Vue) {
    window.Vue.use(plugin);
  }

  return plugin;

})));